5cf3fba3da
We have observed that the ABI implementations for AArch64 and x64 are very similar; in fact, x64's implementation started as a modified copy of AArch64's implementation. This is an artifact of both a similar ABI (both machines pass args and return values in registers first, then the stack, and both machines give considerable freedom with stack-frame layout) and a too-low-level ABI abstraction in the existing design. For machines that fit the mainstream or most common ABI-design idioms, we should be able to do much better. This commit factors AArch64 into machine-specific and machine-independent parts, but does not yet modify x64; that will come next. This should be completely neutral with respect to compile time and generated code performance.
This crate contains the core Cranelift code generator. It translates code from an intermediate representation into executable machine code.